21795109

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:209

約数の個数: 32

約数和(自身を含む): 27822080

約数和(自身を除く): 6026971

約数列:

[1, 7, 19, 37, 43, 103, 133, 259, 301, 703, 721, 817, 1591, 1957, 3811, 4429, 4921, 5719, 11137, 13699, 26677, 30229, 31003, 72409, 84151, 163873, 211603, 506863, 589057, 1147111, 3113587, 21795109]

約数ペア:

[(1, 21795109), (7, 3113587), (19, 1147111), (37, 589057), (43, 506863), (103, 211603), (133, 163873), (259, 84151), (301, 72409), (703, 31003), (721, 30229), (817, 26677), (1591, 13699), (1957, 11137), (3811, 5719), (4429, 4921)]